| APA | HLDZ. (2012, February 15). In Acronym Geek. Retrieved 20:41, February 15, 2012, from http://www.acronymgeek.com/HLDZ |
| MLA | "HLDZ." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HLDZ>. |
| MHRA | 'HLDZ', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HLDZ> [accessed 15 February 2012] |
| Chicago | "HLDZ", http://www.acronymgeek.com/HLDZ (accessed February 15, 2012). |
| CBE/CSE | HLDZ [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HLDZ. |
| Bluebook | HLDZ, http://www.acronymgeek.com/HLDZ (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLDZ, http://www.acronymgeek.com/HLDZ (optional description here) (as of Feb. 15, 2012, 20:41). |
| AMA | HLDZ. Acronym Geek. February 15, 2012, 20:41. Available at: http://www.acronymgeek.com/HLDZ. Accessed February 15, 2012, 20:41. |